Dogging device



Patented Feb. 8, 1927.

j unrr r 0., S'IT'IKUS, OF POTLATCH, IDAHO.

Original application filed April 29, 925, Serial 1\T0. 26,728. Divided and this application filed. March 1,

a Y 1926. Serial No. 91,602. ,1

" This application is a division of an application filed by me April 29, 1925, Serial'No. 26,728.

, The invention relates tonieans for feeding work to a saw or cutter and has for its'object the provision of novel means for securing the log or work upon the carriage. The invention is illustrated in the accompanying drawing and will be hereinafter fully described, the novel features being particu-, larly defined in the appended claim.

In the drawing:

Figure 1 is a plan view of an apparatus embodying the invention, and

Fig. 2 is an end elevation of the carriage;

Inv the drawing, the reference numeral 1 indicates sills connected by cross bar-s3 at intervals, and upon which issecured an:upper frame 4. I also secure upon the side of one silla ledge 5 adapted to support the ends of tracks 7 upon which the car 8 may travel. If desired, rails 9 may be secured across the sills 1 in alinement with the track rails 7 so that the car 8 may be moved close to thedrum 10 which is carried by the main frame.

The said drum 10 is in the form of a large spool having corrugations 11 of any desired form in its end flanges whereby it will firmly engage a log and support the same. This spool is carried by a shaft 13 extending longitudinally of the main frame and mounted in suitable bearings thereon, a worm gear 14 being secured upon the inner end of said shaft.

The car 8 may be of any desired structure and is illustrated as a f0ur-wheel truck having a transverse log'receiving body 15 which is constructed centrally with a recess or seat 16 in which the log 12 may rest. Upon pivotally mount the dogs 17 which are in the form of angle levers fulcrumed at their angles upon the beam or vided' at their upper extremities with spurs 18 adapted to enter the opposite. sides of the log to hold the same, as clearly shown in Fig. The lower portions of the dogspresent inwardly extending arms, the extremie ties 19 of which overlap, as shown in Fig. 2,

and have convex upper edges. When there is no log on the car, the upper ends of the dogs are swung outwardly, thereby causing the inwardly extending arms of the dogs to swing upwardly so that the extremities of said arms will project. somewhat above the band pulley 24.

one side of thisbeam or body 15, 1

body 15 and pro bottom of therece'ss "or seat 16. 7 Then when the log is brought into position upon the truck and enters the said seat, the weight of the log will swing the inwardly extending arms of the dogs downwardlyand cause the spurs 18 to automatically engage the oppo site sides of the log so that it will be then held in fixed relation to the truck, as will he readily understood upon reference, to Fig. 2. r

Mounted in suitable bearings upon the upper frame 4 is a transmission shaft 20 equipped nearone end with a worm 21, meshing with the worm gear 14, and near its opposite end equippedwith a band pulley receiving motion from the power shaft 23 which is mounted in suitable bearings upon the top of the upper frame 4, and carries a -A belt 25 transmits motion from the pulley 24 to the pulley on the shaft 20 and a controlling mechanism, indicated generally at 26, permitsthe shaft 20 to he started or stopped at will. A setting shaft 28 is mounted for rocking movement upon the sills 1 and extends transversely thereof, a hand lever 29 being secured rigidly to one end of the said shaft, the opposite end of said shaft being operatively connected with the controlling mechanism 26. The rotati n of the shaft 20 is imparted through the worm gearing to the drum or spool 10 which, by its-engagement with the end of the log, will feed'the log to the saw; The

car 8 is, of course, clamped to and supports the outer rear end of the log so that, when the log moves, the car will travel. with'it along the tracks 7, the outer end of the log being thereby supported and guided to the feeding drum or spool 10.

To secure the log against movement while a cut is being made, I provide a hook 32 adaptedto engage the top of the'log immediately over the spool 10, which hook'has a i .long shank 33pivota1y supportedupon one of the sills 1, as shown at 84. in the vertical plane of the shank a crank 35 is secured to the rocking setting shaft 28, andthis crank extends toward the spool but is upon a different radius of the shaft from the crank 30. A'link 36 is pivoted'to the free end of the crank 35 and rises therefrom to the shank '33, being provided at its upper end with an eve 37 engaging around the shank. as clearly shown. When the hand lever 29 is rocked so as to cause the shaft 20 to operate the crank 35 and the link 36 Will be swung upwardly so that the hook 82 will bedisengaged from the log and Will be held elevated. When the lever is returned to its normal position, the hook will be reengaged With the log so as to hold the same against movement While a cut is being made.

While I have referred to the shaft 23 as the engine shaft, it will be understood that it may be an extension of the power shaft of the engine which operates the drag saw or it may be equipped with a pulley, indicated at 38, to be engaged by a belt extending from the power shaft of the engine. 7

Having thus described the invention, I claim:

In a log-feeding meohanisin, the combination of a spool upon which one end portion of the log may rest, means for rotating said spool, a car arranged to travel toward and from said spool at a right angle to the axis of the spool and support the outerend of the log, and a-pair of dogs pivotally mounted upon the ear and consisting of angle levers fulcruined at their angles and having their lower arms extending inwardly in overlap-' ping relationbelovv the log seat and their upper ends provided With spurs adapted to I engage the opposite sides Off'tlle log.

In testimony whereof I affixiny signature.

F ED o. srrTKUs. IL. 8.1 

